I'm wondering what is a normal way to work, Because I can tell my harddisk is going to be full real quick

-Which pictures do you throw away permanently?
-What do you do with pictures that aren't eye-catchers but don't have any obvious flaws like being unsharp or way too bright? All the "in-between" quality ones?
-Which formats to save to? Save to JPG-exif only and keep the raw as backup?

Just wondering which criteria you guys use, because I'm often not so sure...

So far, with the fact that I have plenty of space at my disposal in mind, I only throw away the shots which are technically flawed. That is to say that they are ruined by poor focus, wrong exposure or motion blur and not for their lack of artistic or aesthetic appeal.

I tend to keep the so-so shots anyway. I find that some shots that look average or even awful can turn out quite well when post-processed(quite heavily). Sometimes when I go back and look at the images I've taken, I think of new ideas for it that I may not have thought of before so it is for this reason that I keep most of my images.

I shot in JPG originally but now shoot only in RAW and I'm still trying to find out if the merits of RAW are worth the extra space and the possible lack of future compatibility given that all of my images are for personal use only at the moment.

I've only been got 18+GB of images at the moment, I've only been taking photography seriously for about half a year. Who knows? I might adopt a more strict criteria when space really becomes an issue!

I'll admit it: I keep (almost) everything. To my wife's horror Currently thinking about installing my first 2 terabyte-drives to mirror everything I have.
So far my 10,000+shots "only" need 130GB. As you can get 750GB for 100€ I never think about deleting anything...

My current main pic storage is about 850 MB for 2000 images. I've been collecting for about 10 years and weeding out the fluff as I go. I only keep what I'm able to view within a reasonable time frame with a fast viewer, approx. 1 to 1-1/2 hours. If you keep your filenames well organized, plus any cross references, you'll be able to scan thru a segment of your images rather quickly, and eliminate the redundant or duplicate images.

Well I throw away most of the ones I think are crap lol. Whether it be, over/under exposed, (i normally bracket so there's normally at least one thats ok), out of focus (which is rare), blurred from camera shake, etc. But I have no problems with taking 50 shots and keeping only 7, as long as those 7 are 'flickr' material so to speak. That's the whole point of shooting digital right? Endless margin for error, and to learn through making mistakes and such. Glad to say i'm not the sort to stick pet photos and such in my flickr lol.